Objective: To study the active sites of podophyllotoxin derivatives. Methods: Some podophyllotoxin derivatives were anal......

By using the non-equilibrium Green’s function technique, we investigate the electronic transport properties in an Aharo......

The total import and export value was US＄221.42 billion in October 2008,ayear-on-year increase of 17.6%.The ex-port valu......

The present study is aimed at assessing theeffects of allitridi,a major component of garlic,on platelet aggregation and......

Recent research results suggest that acidification of acid sulfate soils may be inhibited in well-drained estuarine floo......

根据深基坑降水方案设计的基本原则以及工程地质、水文地质条件,提出了管井井点降水的措施,并分析了降水过程对周边建筑物的影响.......

本文依据分形理论，采用盒维数法计算了西藏樟木地区滑坡及其水系的空间分维。分析了分维的变化特征。发现滑坡高潮期前存在不同幅度......

巴西GASCAV天然气管道工程，由于地形起伏，管道的弯管用量大．施工采用沟上组焊带弯管下沟方式，因此根据地形确定管沟弯点、进行管沟开挖......

本文提出了基于均衡实现的柔性机械臂模态截断方法,求取了单连杆柔性机械臂状态空间表达式的均衡实现,并以此为依据对控制模型和动......